[04/10] powerpc/64s/exception: move KVM test to common code
diff mbox series

Message ID 20190821122315.9535-5-npiggin@gmail.com
State Superseded
Headers show
Series
  • powerpc/64s/exception: initial reworking of
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Commit Message

Nicholas Piggin Aug. 21, 2019, 12:23 p.m. UTC
This allows more code to be moved out of unrelocated regions. The system
call KVMTEST is changed to be open-coded and remain in the tramp area to
avoid having to move it to entry_64.S. The custom nature of the system
call entry code means the hcall case can be made more streamlined than
regular interrupt handlers.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 arch/powerpc/kernel/exceptions-64s.S    | 235 ++++++++++++------------
 arch/powerpc/kvm/book3s_hv_rmhandlers.S |  11 --
 arch/powerpc/kvm/book3s_segment.S       |   7 -
 3 files changed, 115 insertions(+), 138 deletions(-)

Patch
diff mbox series

diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index b78167ce6355..e5d5d81d6107 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -44,7 +44,6 @@ 
  * EXC_VIRT_BEGIN/END  - virt (AIL), unrelocated exception vectors
  * TRAMP_REAL_BEGIN    - real, unrelocated helpers (virt may call these)
  * TRAMP_VIRT_BEGIN    - virt, unreloc helpers (in practice, real can use)
- * TRAMP_KVM_BEGIN     - KVM handlers, these are put into real, unrelocated
  * EXC_COMMON          - After switching to virtual, relocated mode.
  */
 
@@ -74,13 +73,6 @@  name:
 #define TRAMP_VIRT_BEGIN(name)					\
 	FIXED_SECTION_ENTRY_BEGIN(virt_trampolines, name)
 
-#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
-#define TRAMP_KVM_BEGIN(name)					\
-	TRAMP_VIRT_BEGIN(name)
-#else
-#define TRAMP_KVM_BEGIN(name)
-#endif
-
 #define EXC_REAL_NONE(start, size)				\
 	FIXED_SECTION_ENTRY_BEGIN_LOCATION(real_vectors, exc_real_##start##_##unused, start, size); \
 	FIXED_SECTION_ENTRY_END_LOCATION(real_vectors, exc_real_##start##_##unused, start, size)
@@ -271,6 +263,9 @@  do_define_int n
 .endm
 
 .macro GEN_KVM name
+	.balign IFETCH_ALIGN_BYTES
+\name\()_kvm:
+
 	.if IKVM_SKIP
 	cmpwi	r10,KVM_GUEST_MODE_SKIP
 	beq	89f
@@ -281,13 +276,18 @@  BEGIN_FTR_SECTION_NESTED(947)
 END_FTR_SECTION_NESTED(CPU_FTR_CFAR,CPU_FTR_CFAR,947)
 	.endif
 
+	ld	r10,PACA_EXGEN+EX_CTR(r13)
+	mtctr	r10
 BEGIN_FTR_SECTION_NESTED(948)
 	ld	r10,IAREA+EX_PPR(r13)
 	std	r10,HSTATE_PPR(r13)
 END_FTR_SECTION_NESTED(CPU_FTR_HAS_PPR,CPU_FTR_HAS_PPR,948)
-	ld	r10,IAREA+EX_R10(r13)
+	ld	r11,IAREA+EX_R11(r13)
+	ld	r12,IAREA+EX_R12(r13)
 	std	r12,HSTATE_SCRATCH0(r13)
 	sldi	r12,r9,32
+	ld	r9,IAREA+EX_R9(r13)
+	ld	r10,IAREA+EX_R10(r13)
 	/* HSRR variants have the 0x2 bit added to their trap number */
 	.if IHSRR == EXC_HV_OR_STD
 	BEGIN_FTR_SECTION
@@ -300,29 +300,16 @@  END_FTR_SECTION_NESTED(CPU_FTR_HAS_PPR,CPU_FTR_HAS_PPR,948)
 	.else
 	ori	r12,r12,(IVEC)
 	.endif
-
-#ifdef CONFIG_RELOCATABLE
-	/*
-	 * KVM requires __LOAD_FAR_HANDLER beause kvmppc_interrupt lives
-	 * outside the head section. CONFIG_RELOCATABLE KVM expects CTR
-	 * to be saved in HSTATE_SCRATCH1.
-	 */
-	ld	r9,IAREA+EX_CTR(r13)
-	std	r9,HSTATE_SCRATCH1(r13)
-	__LOAD_FAR_HANDLER(r9, kvmppc_interrupt)
-	mtctr	r9
-	ld	r9,IAREA+EX_R9(r13)
-	bctr
-#else
-	ld	r9,IAREA+EX_R9(r13)
 	b	kvmppc_interrupt
-#endif
-
 
 	.if IKVM_SKIP
 89:	mtocrf	0x80,r9
+	ld	r10,PACA_EXGEN+EX_CTR(r13)
+	mtctr	r10
 	ld	r9,IAREA+EX_R9(r13)
 	ld	r10,IAREA+EX_R10(r13)
+	ld	r11,IAREA+EX_R11(r13)
+	ld	r12,IAREA+EX_R12(r13)
 	.if IHSRR == EXC_HV_OR_STD
 	BEGIN_FTR_SECTION
 	b	kvmppc_skip_Hinterrupt
@@ -410,11 +397,6 @@  END_FTR_SECTION_NESTED(CPU_FTR_HAS_PPR,CPU_FTR_HAS_PPR,948)
 	mfctr	r10
 	std	r10,IAREA+EX_CTR(r13)
 	mfcr	r9
-
-	.if (!\virt && IKVM_REAL) || (\virt && IKVM_VIRT)
-		KVMTEST \name IHSRR IVEC
-	.endif
-
 	std	r11,IAREA+EX_R11(r13)
 	std	r12,IAREA+EX_R12(r13)
 
@@ -478,6 +460,10 @@  END_FTR_SECTION_NESTED(CPU_FTR_HAS_PPR,CPU_FTR_HAS_PPR,948)
 .macro __GEN_COMMON_ENTRY name
 DEFINE_FIXED_SYMBOL(\name\()_common_real)
 \name\()_common_real:
+	.if IKVM_REAL
+		KVMTEST \name IHSRR IVEC
+	.endif
+
 	ld	r10,PACAKMSR(r13)	/* get MSR value for kernel */
 	.if ! ISET_RI
 	xori	r10,r10,MSR_RI		/* Clear MSR_RI */
@@ -489,6 +475,10 @@  DEFINE_FIXED_SYMBOL(\name\()_common_real)
 	.balign IFETCH_ALIGN_BYTES
 DEFINE_FIXED_SYMBOL(\name\()_common_virt)
 \name\()_common_virt:
+	.if IKVM_VIRT
+		KVMTEST \name IHSRR IVEC
+	.endif
+
 	.if ISET_RI
 	li	r10,MSR_RI
 	mtmsrd	r10,1			/* Set MSR_RI */
@@ -848,8 +838,6 @@  END_FTR_SECTION_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
 	 */
 EXC_REAL_END(system_reset, 0x100, 0x100)
 EXC_VIRT_NONE(0x4100, 0x100)
-TRAMP_KVM_BEGIN(system_reset_kvm)
-	GEN_KVM system_reset
 
 #ifdef CONFIG_PPC_P7_NAP
 TRAMP_REAL_BEGIN(system_reset_idle_wake)
@@ -927,6 +915,8 @@  EXC_COMMON_BEGIN(system_reset_common)
 	EXCEPTION_RESTORE_REGS EXC_STD
 	RFI_TO_USER_OR_KERNEL
 
+	GEN_KVM system_reset
+
 
 INT_DEFINE_BEGIN(machine_check_early)
 	IVEC=0x200
@@ -970,9 +960,6 @@  TRAMP_REAL_BEGIN(machine_check_fwnmi)
 	GEN_INT_ENTRY machine_check_early, GEN_REAL
 #endif
 
-TRAMP_KVM_BEGIN(machine_check_kvm)
-	GEN_KVM machine_check
-
 #define MACHINE_CHECK_HANDLER_WINDUP			\
 	/* Clear MSR_RI before setting SRR0 and SRR1. */\
 	li	r9,0;					\
@@ -1129,6 +1116,9 @@  EXC_COMMON_BEGIN(machine_check_common)
 	bl	machine_check_exception
 	b	ret_from_except
 
+	GEN_KVM machine_check
+
+
 #ifdef CONFIG_PPC_P7_NAP
 /*
  * This is an idle wakeup. Low level machine check has already been
@@ -1223,8 +1213,6 @@  EXC_REAL_END(data_access, 0x300, 0x80)
 EXC_VIRT_BEGIN(data_access, 0x4300, 0x80)
 	GEN_INT_ENTRY data_access, GEN_VIRT
 EXC_VIRT_END(data_access, 0x4300, 0x80)
-TRAMP_KVM_BEGIN(data_access_kvm)
-	GEN_KVM data_access
 EXC_COMMON_BEGIN(data_access_common)
 	GEN_COMMON data_access
 	ld	r4,_DAR(r1)
@@ -1237,6 +1225,8 @@  MMU_FTR_SECTION_ELSE
 	b	handle_page_fault
 ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX)
 
+	GEN_KVM data_access
+
 
 INT_DEFINE_BEGIN(data_access_slb)
 	IVEC=0x380
@@ -1254,8 +1244,6 @@  EXC_REAL_END(data_access_slb, 0x380, 0x80)
 EXC_VIRT_BEGIN(data_access_slb, 0x4380, 0x80)
 	GEN_INT_ENTRY data_access_slb, GEN_VIRT
 EXC_VIRT_END(data_access_slb, 0x4380, 0x80)
-TRAMP_KVM_BEGIN(data_access_slb_kvm)
-	GEN_KVM data_access_slb
 EXC_COMMON_BEGIN(data_access_slb_common)
 	GEN_COMMON data_access_slb
 	ld	r4,_DAR(r1)
@@ -1280,6 +1268,8 @@  ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX)
 	bl	do_bad_slb_fault
 	b	ret_from_except
 
+	GEN_KVM data_access_slb
+
 
 INT_DEFINE_BEGIN(instruction_access)
 	IVEC=0x400
@@ -1297,8 +1287,6 @@  EXC_REAL_END(instruction_access, 0x400, 0x80)
 EXC_VIRT_BEGIN(instruction_access, 0x4400, 0x80)
 	GEN_INT_ENTRY instruction_access, GEN_VIRT
 EXC_VIRT_END(instruction_access, 0x4400, 0x80)
-TRAMP_KVM_BEGIN(instruction_access_kvm)
-	GEN_KVM instruction_access
 EXC_COMMON_BEGIN(instruction_access_common)
 	GEN_COMMON instruction_access
 	ld	r4,_DAR(r1)
@@ -1311,6 +1299,8 @@  MMU_FTR_SECTION_ELSE
 	b	handle_page_fault
 ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX)
 
+	GEN_KVM instruction_access
+
 
 INT_DEFINE_BEGIN(instruction_access_slb)
 	IVEC=0x480
@@ -1328,8 +1318,6 @@  EXC_REAL_END(instruction_access_slb, 0x480, 0x80)
 EXC_VIRT_BEGIN(instruction_access_slb, 0x4480, 0x80)
 	GEN_INT_ENTRY instruction_access_slb, GEN_VIRT
 EXC_VIRT_END(instruction_access_slb, 0x4480, 0x80)
-TRAMP_KVM_BEGIN(instruction_access_slb_kvm)
-	GEN_KVM instruction_access_slb
 EXC_COMMON_BEGIN(instruction_access_slb_common)
 	GEN_COMMON instruction_access_slb
 	ld	r4,_DAR(r1)
@@ -1354,6 +1342,9 @@  ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX)
 	bl	do_bad_slb_fault
 	b	ret_from_except
 
+	GEN_KVM instruction_access_slb
+
+
 INT_DEFINE_BEGIN(hardware_interrupt)
 	IVEC=0x500
 	IHSRR=EXC_HV_OR_STD
@@ -1369,8 +1360,6 @@  EXC_REAL_END(hardware_interrupt, 0x500, 0x100)
 EXC_VIRT_BEGIN(hardware_interrupt, 0x4500, 0x100)
 	GEN_INT_ENTRY hardware_interrupt, GEN_VIRT
 EXC_VIRT_END(hardware_interrupt, 0x4500, 0x100)
-TRAMP_KVM_BEGIN(hardware_interrupt_kvm)
-	GEN_KVM hardware_interrupt
 EXC_COMMON_BEGIN(hardware_interrupt_common)
 	GEN_COMMON hardware_interrupt
 	FINISH_NAP
@@ -1379,6 +1368,8 @@  EXC_COMMON_BEGIN(hardware_interrupt_common)
 	bl	do_IRQ
 	b	ret_from_except_lite
 
+	GEN_KVM hardware_interrupt
+
 
 INT_DEFINE_BEGIN(alignment)
 	IVEC=0x600
@@ -1395,8 +1386,6 @@  EXC_REAL_END(alignment, 0x600, 0x100)
 EXC_VIRT_BEGIN(alignment, 0x4600, 0x100)
 	GEN_INT_ENTRY alignment, GEN_VIRT
 EXC_VIRT_END(alignment, 0x4600, 0x100)
-TRAMP_KVM_BEGIN(alignment_kvm)
-	GEN_KVM alignment
 EXC_COMMON_BEGIN(alignment_common)
 	GEN_COMMON alignment
 	bl	save_nvgprs
@@ -1404,6 +1393,8 @@  EXC_COMMON_BEGIN(alignment_common)
 	bl	alignment_exception
 	b	ret_from_except
 
+	GEN_KVM alignment
+
 
 INT_DEFINE_BEGIN(program_check)
 	IVEC=0x700
@@ -1418,8 +1409,6 @@  EXC_REAL_END(program_check, 0x700, 0x100)
 EXC_VIRT_BEGIN(program_check, 0x4700, 0x100)
 	GEN_INT_ENTRY program_check, GEN_VIRT
 EXC_VIRT_END(program_check, 0x4700, 0x100)
-TRAMP_KVM_BEGIN(program_check_kvm)
-	GEN_KVM program_check
 EXC_COMMON_BEGIN(program_check_common)
 	__GEN_COMMON_ENTRY program_check
 
@@ -1459,6 +1448,8 @@  EXC_COMMON_BEGIN(program_check_common)
 	bl	program_check_exception
 	b	ret_from_except
 
+	GEN_KVM program_check
+
 
 INT_DEFINE_BEGIN(fp_unavailable)
 	IVEC=0x800
@@ -1474,8 +1465,6 @@  EXC_REAL_END(fp_unavailable, 0x800, 0x100)
 EXC_VIRT_BEGIN(fp_unavailable, 0x4800, 0x100)
 	GEN_INT_ENTRY fp_unavailable, GEN_VIRT
 EXC_VIRT_END(fp_unavailable, 0x4800, 0x100)
-TRAMP_KVM_BEGIN(fp_unavailable_kvm)
-	GEN_KVM fp_unavailable
 EXC_COMMON_BEGIN(fp_unavailable_common)
 	GEN_COMMON fp_unavailable
 	bne	1f			/* if from user, just load it up */
@@ -1505,6 +1494,8 @@  END_FTR_SECTION_IFSET(CPU_FTR_TM)
 	b	ret_from_except
 #endif
 
+	GEN_KVM fp_unavailable
+
 
 INT_DEFINE_BEGIN(decrementer)
 	IVEC=0x900
@@ -1520,8 +1511,6 @@  EXC_REAL_END(decrementer, 0x900, 0x80)
 EXC_VIRT_BEGIN(decrementer, 0x4900, 0x80)
 	GEN_INT_ENTRY decrementer, GEN_VIRT
 EXC_VIRT_END(decrementer, 0x4900, 0x80)
-TRAMP_KVM_BEGIN(decrementer_kvm)
-	GEN_KVM decrementer
 EXC_COMMON_BEGIN(decrementer_common)
 	GEN_COMMON decrementer
 	FINISH_NAP
@@ -1530,6 +1519,8 @@  EXC_COMMON_BEGIN(decrementer_common)
 	bl	timer_interrupt
 	b	ret_from_except_lite
 
+	GEN_KVM decrementer
+
 
 INT_DEFINE_BEGIN(hdecrementer)
 	IVEC=0x980
@@ -1545,8 +1536,6 @@  EXC_REAL_END(hdecrementer, 0x980, 0x80)
 EXC_VIRT_BEGIN(hdecrementer, 0x4980, 0x80)
 	GEN_INT_ENTRY hdecrementer, GEN_VIRT
 EXC_VIRT_END(hdecrementer, 0x4980, 0x80)
-TRAMP_KVM_BEGIN(hdecrementer_kvm)
-	GEN_KVM hdecrementer
 EXC_COMMON_BEGIN(hdecrementer_common)
 	GEN_COMMON hdecrementer
 	bl	save_nvgprs
@@ -1554,6 +1543,8 @@  EXC_COMMON_BEGIN(hdecrementer_common)
 	bl	hdec_interrupt
 	b	ret_from_except
 
+	GEN_KVM hdecrementer
+
 
 INT_DEFINE_BEGIN(doorbell_super)
 	IVEC=0xa00
@@ -1569,8 +1560,6 @@  EXC_REAL_END(doorbell_super, 0xa00, 0x100)
 EXC_VIRT_BEGIN(doorbell_super, 0x4a00, 0x100)
 	GEN_INT_ENTRY doorbell_super, GEN_VIRT
 EXC_VIRT_END(doorbell_super, 0x4a00, 0x100)
-TRAMP_KVM_BEGIN(doorbell_super_kvm)
-	GEN_KVM doorbell_super
 EXC_COMMON_BEGIN(doorbell_super_common)
 	GEN_COMMON doorbell_super
 	FINISH_NAP
@@ -1583,6 +1572,8 @@  EXC_COMMON_BEGIN(doorbell_super_common)
 #endif
 	b	ret_from_except_lite
 
+	GEN_KVM doorbell_super
+
 
 EXC_REAL_NONE(0xb00, 0x100)
 EXC_VIRT_NONE(0x4b00, 0x100)
@@ -1704,6 +1695,7 @@  EXC_VIRT_BEGIN(system_call, 0x4c00, 0x100)
 EXC_VIRT_END(system_call, 0x4c00, 0x100)
 
 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
+TRAMP_REAL_BEGIN(system_call_kvm)
 	/*
 	 * This is a hcall, so register convention is as above, with these
 	 * differences:
@@ -1711,20 +1703,35 @@  EXC_VIRT_END(system_call, 0x4c00, 0x100)
 	 * ctr = orig r13
 	 * orig r10 saved in PACA
 	 */
-TRAMP_KVM_BEGIN(system_call_kvm)
 	 /*
 	  * Save the PPR (on systems that support it) before changing to
 	  * HMT_MEDIUM. That allows the KVM code to save that value into the
 	  * guest state (it is the guest's PPR value).
 	  */
-	OPT_GET_SPR(r10, SPRN_PPR, CPU_FTR_HAS_PPR)
+BEGIN_FTR_SECTION_NESTED(948)
+	mfspr	r10,SPRN_PPR
+	std	r10,HSTATE_PPR(r13)
+END_FTR_SECTION_NESTED(CPU_FTR_HAS_PPR,CPU_FTR_HAS_PPR,948)
 	HMT_MEDIUM
-	OPT_SAVE_REG_TO_PACA(PACA_EXGEN+EX_PPR, r10, CPU_FTR_HAS_PPR)
 	mfctr	r10
 	SET_SCRATCH0(r10)
-	std	r9,PACA_EXGEN+EX_R9(r13)
-	mfcr	r9
-	GEN_KVM system_call
+	mfcr	r10
+	std	r12,HSTATE_SCRATCH0(r13)
+	sldi	r12,r10,32
+	ori	r12,r12,0xc00
+#ifdef CONFIG_RELOCATABLE
+	/*
+	 * Requires __LOAD_FAR_HANDLER beause kvmppc_interrupt lives
+	 * outside the head section.
+	 */
+	__LOAD_FAR_HANDLER(r10, kvmppc_interrupt)
+	mtctr   r10
+	ld	r10,PACA_EXGEN+EX_R10(r13)
+	bctr
+#else
+	ld	r10,PACA_EXGEN+EX_R10(r13)
+	b       kvmppc_interrupt
+#endif
 #endif
 
 
@@ -1741,8 +1748,6 @@  EXC_REAL_END(single_step, 0xd00, 0x100)
 EXC_VIRT_BEGIN(single_step, 0x4d00, 0x100)
 	GEN_INT_ENTRY single_step, GEN_VIRT
 EXC_VIRT_END(single_step, 0x4d00, 0x100)
-TRAMP_KVM_BEGIN(single_step_kvm)
-	GEN_KVM single_step
 EXC_COMMON_BEGIN(single_step_common)
 	GEN_COMMON single_step
 	bl	save_nvgprs
@@ -1750,6 +1755,8 @@  EXC_COMMON_BEGIN(single_step_common)
 	bl	single_step_exception
 	b	ret_from_except
 
+	GEN_KVM single_step
+
 
 INT_DEFINE_BEGIN(h_data_storage)
 	IVEC=0xe00
@@ -1768,8 +1775,6 @@  EXC_REAL_END(h_data_storage, 0xe00, 0x20)
 EXC_VIRT_BEGIN(h_data_storage, 0x4e00, 0x20)
 	GEN_INT_ENTRY h_data_storage, GEN_VIRT, GEN_OOL
 EXC_VIRT_END(h_data_storage, 0x4e00, 0x20)
-TRAMP_KVM_BEGIN(h_data_storage_kvm)
-	GEN_KVM h_data_storage
 EXC_COMMON_BEGIN(h_data_storage_common)
 	GEN_COMMON h_data_storage
 	bl      save_nvgprs
@@ -1783,6 +1788,8 @@  MMU_FTR_SECTION_ELSE
 ALT_MMU_FTR_SECTION_END_IFSET(MMU_FTR_TYPE_RADIX)
 	b       ret_from_except
 
+	GEN_KVM h_data_storage
+
 
 INT_DEFINE_BEGIN(h_instr_storage)
 	IVEC=0xe20
@@ -1798,8 +1805,6 @@  EXC_REAL_END(h_instr_storage, 0xe20, 0x20)
 EXC_VIRT_BEGIN(h_instr_storage, 0x4e20, 0x20)
 	GEN_INT_ENTRY h_instr_storage, GEN_VIRT, GEN_OOL
 EXC_VIRT_END(h_instr_storage, 0x4e20, 0x20)
-TRAMP_KVM_BEGIN(h_instr_storage_kvm)
-	GEN_KVM h_instr_storage
 EXC_COMMON_BEGIN(h_instr_storage_common)
 	GEN_COMMON h_instr_storage
 	bl	save_nvgprs
@@ -1807,6 +1812,8 @@  EXC_COMMON_BEGIN(h_instr_storage_common)
 	bl	unknown_exception
 	b	ret_from_except
 
+	GEN_KVM h_instr_storage
+
 
 INT_DEFINE_BEGIN(emulation_assist)
 	IVEC=0xe40
@@ -1822,8 +1829,6 @@  EXC_REAL_END(emulation_assist, 0xe40, 0x20)
 EXC_VIRT_BEGIN(emulation_assist, 0x4e40, 0x20)
 	GEN_INT_ENTRY emulation_assist, GEN_VIRT, GEN_OOL
 EXC_VIRT_END(emulation_assist, 0x4e40, 0x20)
-TRAMP_KVM_BEGIN(emulation_assist_kvm)
-	GEN_KVM emulation_assist
 EXC_COMMON_BEGIN(emulation_assist_common)
 	GEN_COMMON emulation_assist
 	bl	save_nvgprs
@@ -1831,6 +1836,8 @@  EXC_COMMON_BEGIN(emulation_assist_common)
 	bl	emulation_assist_interrupt
 	b	ret_from_except
 
+	GEN_KVM emulation_assist
+
 
 /*
  * hmi_exception trampoline is a special case. It jumps to hmi_exception_early
@@ -1862,10 +1869,6 @@  EXC_REAL_BEGIN(hmi_exception, 0xe60, 0x20)
 	GEN_INT_ENTRY hmi_exception_early, GEN_REAL, GEN_OOL
 EXC_REAL_END(hmi_exception, 0xe60, 0x20)
 EXC_VIRT_NONE(0x4e60, 0x20)
-TRAMP_KVM_BEGIN(hmi_exception_early_kvm)
-	GEN_KVM hmi_exception_early
-TRAMP_KVM_BEGIN(hmi_exception_kvm)
-	GEN_KVM hmi_exception
 
 EXC_COMMON_BEGIN(hmi_exception_early_common)
 	mfspr	r11,SPRN_HSRR0		/* Save HSRR0 */
@@ -1892,6 +1895,8 @@  EXC_COMMON_BEGIN(hmi_exception_early_common)
 	EXCEPTION_RESTORE_REGS EXC_HV
 	GEN_INT_ENTRY hmi_exception, GEN_REAL
 
+	GEN_KVM hmi_exception_early
+
 EXC_COMMON_BEGIN(hmi_exception_common)
 	GEN_COMMON hmi_exception
 	FINISH_NAP
@@ -1901,6 +1906,8 @@  EXC_COMMON_BEGIN(hmi_exception_common)
 	bl	handle_hmi_exception
 	b	ret_from_except
 
+	GEN_KVM hmi_exception
+
 
 INT_DEFINE_BEGIN(h_doorbell)
 	IVEC=0xe80
@@ -1917,8 +1924,6 @@  EXC_REAL_END(h_doorbell, 0xe80, 0x20)
 EXC_VIRT_BEGIN(h_doorbell, 0x4e80, 0x20)
 	GEN_INT_ENTRY h_doorbell, GEN_VIRT, GEN_OOL
 EXC_VIRT_END(h_doorbell, 0x4e80, 0x20)
-TRAMP_KVM_BEGIN(h_doorbell_kvm)
-	GEN_KVM h_doorbell
 EXC_COMMON_BEGIN(h_doorbell_common)
 	GEN_COMMON h_doorbell
 	FINISH_NAP
@@ -1931,6 +1936,8 @@  EXC_COMMON_BEGIN(h_doorbell_common)
 #endif
 	b	ret_from_except_lite
 
+	GEN_KVM h_doorbell
+
 
 INT_DEFINE_BEGIN(h_virt_irq)
 	IVEC=0xea0
@@ -1947,8 +1954,6 @@  EXC_REAL_END(h_virt_irq, 0xea0, 0x20)
 EXC_VIRT_BEGIN(h_virt_irq, 0x4ea0, 0x20)
 	GEN_INT_ENTRY h_virt_irq, GEN_VIRT, GEN_OOL
 EXC_VIRT_END(h_virt_irq, 0x4ea0, 0x20)
-TRAMP_KVM_BEGIN(h_virt_irq_kvm)
-	GEN_KVM h_virt_irq
 EXC_COMMON_BEGIN(h_virt_irq_common)
 	GEN_COMMON h_virt_irq
 	FINISH_NAP
@@ -1957,6 +1962,8 @@  EXC_COMMON_BEGIN(h_virt_irq_common)
 	bl	do_IRQ
 	b	ret_from_except_lite
 
+	GEN_KVM h_virt_irq
+
 
 EXC_REAL_NONE(0xec0, 0x20)
 EXC_VIRT_NONE(0x4ec0, 0x20)
@@ -1978,8 +1985,6 @@  EXC_REAL_END(performance_monitor, 0xf00, 0x20)
 EXC_VIRT_BEGIN(performance_monitor, 0x4f00, 0x20)
 	GEN_INT_ENTRY performance_monitor, GEN_VIRT, GEN_OOL
 EXC_VIRT_END(performance_monitor, 0x4f00, 0x20)
-TRAMP_KVM_BEGIN(performance_monitor_kvm)
-	GEN_KVM performance_monitor
 EXC_COMMON_BEGIN(performance_monitor_common)
 	GEN_COMMON performance_monitor
 	FINISH_NAP
@@ -1988,6 +1993,8 @@  EXC_COMMON_BEGIN(performance_monitor_common)
 	bl	performance_monitor_exception
 	b	ret_from_except_lite
 
+	GEN_KVM performance_monitor
+
 
 INT_DEFINE_BEGIN(altivec_unavailable)
 	IVEC=0xf20
@@ -2003,8 +2010,6 @@  EXC_REAL_END(altivec_unavailable, 0xf20, 0x20)
 EXC_VIRT_BEGIN(altivec_unavailable, 0x4f20, 0x20)
 	GEN_INT_ENTRY altivec_unavailable, GEN_VIRT, GEN_OOL
 EXC_VIRT_END(altivec_unavailable, 0x4f20, 0x20)
-TRAMP_KVM_BEGIN(altivec_unavailable_kvm)
-	GEN_KVM altivec_unavailable
 EXC_COMMON_BEGIN(altivec_unavailable_common)
 	GEN_COMMON altivec_unavailable
 #ifdef CONFIG_ALTIVEC
@@ -2038,6 +2043,8 @@  END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
 	bl	altivec_unavailable_exception
 	b	ret_from_except
 
+	GEN_KVM altivec_unavailable
+
 
 INT_DEFINE_BEGIN(vsx_unavailable)
 	IVEC=0xf40
@@ -2053,8 +2060,6 @@  EXC_REAL_END(vsx_unavailable, 0xf40, 0x20)
 EXC_VIRT_BEGIN(vsx_unavailable, 0x4f40, 0x20)
 	GEN_INT_ENTRY vsx_unavailable, GEN_VIRT, GEN_OOL
 EXC_VIRT_END(vsx_unavailable, 0x4f40, 0x20)
-TRAMP_KVM_BEGIN(vsx_unavailable_kvm)
-	GEN_KVM vsx_unavailable
 EXC_COMMON_BEGIN(vsx_unavailable_common)
 	GEN_COMMON vsx_unavailable
 #ifdef CONFIG_VSX
@@ -2087,6 +2092,8 @@  END_FTR_SECTION_IFSET(CPU_FTR_VSX)
 	bl	vsx_unavailable_exception
 	b	ret_from_except
 
+	GEN_KVM vsx_unavailable
+
 
 INT_DEFINE_BEGIN(facility_unavailable)
 	IVEC=0xf60
@@ -2101,8 +2108,6 @@  EXC_REAL_END(facility_unavailable, 0xf60, 0x20)
 EXC_VIRT_BEGIN(facility_unavailable, 0x4f60, 0x20)
 	GEN_INT_ENTRY facility_unavailable, GEN_VIRT, GEN_OOL
 EXC_VIRT_END(facility_unavailable, 0x4f60, 0x20)
-TRAMP_KVM_BEGIN(facility_unavailable_kvm)
-	GEN_KVM facility_unavailable
 EXC_COMMON_BEGIN(facility_unavailable_common)
 	GEN_COMMON facility_unavailable
 	bl	save_nvgprs
@@ -2110,6 +2115,8 @@  EXC_COMMON_BEGIN(facility_unavailable_common)
 	bl	facility_unavailable_exception
 	b	ret_from_except
 
+	GEN_KVM facility_unavailable
+
 
 INT_DEFINE_BEGIN(h_facility_unavailable)
 	IVEC=0xf80
@@ -2125,8 +2132,6 @@  EXC_REAL_END(h_facility_unavailable, 0xf80, 0x20)
 EXC_VIRT_BEGIN(h_facility_unavailable, 0x4f80, 0x20)
 	GEN_INT_ENTRY h_facility_unavailable, GEN_VIRT, GEN_OOL
 EXC_VIRT_END(h_facility_unavailable, 0x4f80, 0x20)
-TRAMP_KVM_BEGIN(h_facility_unavailable_kvm)
-	GEN_KVM h_facility_unavailable
 EXC_COMMON_BEGIN(h_facility_unavailable_common)
 	GEN_COMMON h_facility_unavailable
 	bl	save_nvgprs
@@ -2134,6 +2139,8 @@  EXC_COMMON_BEGIN(h_facility_unavailable_common)
 	bl	facility_unavailable_exception
 	b	ret_from_except
 
+	GEN_KVM h_facility_unavailable
+
 
 EXC_REAL_NONE(0xfa0, 0x20)
 EXC_VIRT_NONE(0x4fa0, 0x20)
@@ -2160,14 +2167,15 @@  EXC_REAL_BEGIN(cbe_system_error, 0x1200, 0x100)
 	GEN_INT_ENTRY cbe_system_error, GEN_REAL
 EXC_REAL_END(cbe_system_error, 0x1200, 0x100)
 EXC_VIRT_NONE(0x5200, 0x100)
-TRAMP_KVM_BEGIN(cbe_system_error_kvm)
-	GEN_KVM cbe_system_error
 EXC_COMMON_BEGIN(cbe_system_error_common)
 	GEN_COMMON cbe_system_error
 	bl	save_nvgprs
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	bl	cbe_system_error_exception
 	b	ret_from_except
+
+	GEN_KVM cbe_system_error
+
 #else /* CONFIG_CBE_RAS */
 EXC_REAL_NONE(0x1200, 0x100)
 EXC_VIRT_NONE(0x5200, 0x100)
@@ -2188,8 +2196,6 @@  EXC_REAL_END(instruction_breakpoint, 0x1300, 0x100)
 EXC_VIRT_BEGIN(instruction_breakpoint, 0x5300, 0x100)
 	GEN_INT_ENTRY instruction_breakpoint, GEN_VIRT
 EXC_VIRT_END(instruction_breakpoint, 0x5300, 0x100)
-TRAMP_KVM_BEGIN(instruction_breakpoint_kvm)
-	GEN_KVM instruction_breakpoint
 EXC_COMMON_BEGIN(instruction_breakpoint_common)
 	GEN_COMMON instruction_breakpoint
 	bl	save_nvgprs
@@ -2197,6 +2203,8 @@  EXC_COMMON_BEGIN(instruction_breakpoint_common)
 	bl	instruction_breakpoint_exception
 	b	ret_from_except
 
+	GEN_KVM instruction_breakpoint
+
 
 EXC_REAL_NONE(0x1400, 0x100)
 EXC_VIRT_NONE(0x5400, 0x100)
@@ -2206,6 +2214,7 @@  INT_DEFINE_BEGIN(denorm_exception)
 	IHSRR=EXC_HV
 	IAREA=PACA_EXGEN
 	IEARLY=2
+	IKVM_REAL=1
 INT_DEFINE_END(denorm_exception)
 
 EXC_REAL_BEGIN(denorm_exception, 0x1500, 0x100)
@@ -2215,7 +2224,6 @@  EXC_REAL_BEGIN(denorm_exception, 0x1500, 0x100)
 	andis.	r10,r10,(HSRR1_DENORM)@h /* denorm? */
 	bne+	denorm_assist
 #endif
-	KVMTEST denorm_exception, EXC_HV, 0x1500
 	mfspr	r11,SPRN_HSRR0
 	mfspr	r12,SPRN_HSRR1
 	GEN_BRANCH_TO_COMMON denorm_exception, GEN_REAL
@@ -2233,8 +2241,6 @@  EXC_VIRT_END(denorm_exception, 0x5500, 0x100)
 #else
 EXC_VIRT_NONE(0x5500, 0x100)
 #endif
-TRAMP_KVM_BEGIN(denorm_exception_kvm)
-	GEN_KVM denorm_exception
 
 #ifdef CONFIG_PPC_DENORMALISATION
 TRAMP_REAL_BEGIN(denorm_assist)
@@ -2312,6 +2318,8 @@  EXC_COMMON_BEGIN(denorm_exception_common)
 	bl	unknown_exception
 	b	ret_from_except
 
+	GEN_KVM denorm_exception
+
 
 #ifdef CONFIG_CBE_RAS
 INT_DEFINE_BEGIN(cbe_maintenance)
@@ -2326,14 +2334,15 @@  EXC_REAL_BEGIN(cbe_maintenance, 0x1600, 0x100)
 	GEN_INT_ENTRY cbe_maintenance, GEN_REAL
 EXC_REAL_END(cbe_maintenance, 0x1600, 0x100)
 EXC_VIRT_NONE(0x5600, 0x100)
-TRAMP_KVM_BEGIN(cbe_maintenance_kvm)
-	GEN_KVM cbe_maintenance
 EXC_COMMON_BEGIN(cbe_maintenance_common)
 	GEN_COMMON cbe_maintenance
 	bl	save_nvgprs
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	bl	cbe_maintenance_exception
 	b	ret_from_except
+
+	GEN_KVM cbe_maintenance
+
 #else /* CONFIG_CBE_RAS */
 EXC_REAL_NONE(0x1600, 0x100)
 EXC_VIRT_NONE(0x5600, 0x100)
@@ -2353,8 +2362,6 @@  EXC_REAL_END(altivec_assist, 0x1700, 0x100)
 EXC_VIRT_BEGIN(altivec_assist, 0x5700, 0x100)
 	GEN_INT_ENTRY altivec_assist, GEN_VIRT
 EXC_VIRT_END(altivec_assist, 0x5700, 0x100)
-TRAMP_KVM_BEGIN(altivec_assist_kvm)
-	GEN_KVM altivec_assist
 EXC_COMMON_BEGIN(altivec_assist_common)
 	GEN_COMMON altivec_assist
 	bl	save_nvgprs
@@ -2366,6 +2373,8 @@  EXC_COMMON_BEGIN(altivec_assist_common)
 #endif
 	b	ret_from_except
 
+	GEN_KVM altivec_assist
+
 
 #ifdef CONFIG_CBE_RAS
 INT_DEFINE_BEGIN(cbe_thermal)
@@ -2380,14 +2389,15 @@  EXC_REAL_BEGIN(cbe_thermal, 0x1800, 0x100)
 	GEN_INT_ENTRY cbe_thermal, GEN_REAL
 EXC_REAL_END(cbe_thermal, 0x1800, 0x100)
 EXC_VIRT_NONE(0x5800, 0x100)
-TRAMP_KVM_BEGIN(cbe_thermal_kvm)
-	GEN_KVM cbe_thermal
 EXC_COMMON_BEGIN(cbe_thermal_common)
 	GEN_COMMON cbe_thermal
 	bl	save_nvgprs
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	bl	cbe_thermal_exception
 	b	ret_from_except
+
+	GEN_KVM cbe_thermal
+
 #else /* CONFIG_CBE_RAS */
 EXC_REAL_NONE(0x1800, 0x100)
 EXC_VIRT_NONE(0x5800, 0x100)
@@ -2581,17 +2591,12 @@  TRAMP_REAL_BEGIN(hrfi_flush_fallback)
 	GET_SCRATCH0(r13);
 	hrfid
 
-/*
- * Real mode exceptions actually use this too, but alternate
- * instruction code patches (which end up in the common .text area)
- * cannot reach these if they are put there.
- */
 USE_TEXT_SECTION()
 	MASKED_INTERRUPT EXC_STD
 	MASKED_INTERRUPT EXC_HV
 
 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
-TRAMP_REAL_BEGIN(kvmppc_skip_interrupt)
+kvmppc_skip_interrupt:
 	/*
 	 * Here all GPRs are unchanged from when the interrupt happened
 	 * except for r13, which is saved in SPRG_SCRATCH0.
@@ -2603,7 +2608,7 @@  TRAMP_REAL_BEGIN(kvmppc_skip_interrupt)
 	RFI_TO_KERNEL
 	b	.
 
-TRAMP_REAL_BEGIN(kvmppc_skip_Hinterrupt)
+kvmppc_skip_Hinterrupt:
 	/*
 	 * Here all GPRs are unchanged from when the interrupt happened
 	 * except for r13, which is saved in SPRG_SCRATCH0.
@@ -2616,16 +2621,6 @@  TRAMP_REAL_BEGIN(kvmppc_skip_Hinterrupt)
 	b	.
 #endif
 
-/*
- * Ensure that any handlers that get invoked from the exception prologs
- * above are below the first 64KB (0x10000) of the kernel image because
- * the prologs assemble the addresses of these handlers using the
- * LOAD_HANDLER macro, which uses an ori instruction.
- */
-
-/*** Common interrupt handlers ***/
-
-
 	/*
 	 * Relocation-on interrupts: A subset of the interrupts can be delivered
 	 * with IR=1/DR=1, if AIL==2 and MSR.HV won't be changed by delivering
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index 337e64468d78..4d5c11ff256b 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -1234,7 +1234,6 @@  kvmppc_interrupt_hv:
 	 * R12		= (guest CR << 32) | interrupt vector
 	 * R13		= PACA
 	 * guest R12 saved in shadow VCPU SCRATCH0
-	 * guest CTR saved in shadow VCPU SCRATCH1 if RELOCATABLE
 	 * guest R13 saved in SPRN_SCRATCH0
 	 */
 	std	r9, HSTATE_SCRATCH2(r13)
@@ -1335,12 +1334,7 @@  END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
 11:	stw	r3,VCPU_HEIR(r9)
 
 	/* these are volatile across C function calls */
-#ifdef CONFIG_RELOCATABLE
-	ld	r3, HSTATE_SCRATCH1(r13)
-	mtctr	r3
-#else
 	mfctr	r3
-#endif
 	mfxer	r4
 	std	r3, VCPU_CTR(r9)
 	std	r4, VCPU_XER(r9)
@@ -3184,7 +3178,6 @@  END_FTR_SECTION_IFCLR(CPU_FTR_P9_TM_HV_ASSIST)
  * r12 is (CR << 32) | vector
  * r13 points to our PACA
  * r12 is saved in HSTATE_SCRATCH0(r13)
- * ctr is saved in HSTATE_SCRATCH1(r13) if RELOCATABLE
  * r9 is saved in HSTATE_SCRATCH2(r13)
  * r13 is saved in HSPRG1
  * cfar is saved in HSTATE_CFAR(r13)
@@ -3233,11 +3226,7 @@  kvmppc_bad_host_intr:
 	ld	r5, HSTATE_CFAR(r13)
 	std	r5, ORIG_GPR3(r1)
 	mflr	r3
-#ifdef CONFIG_RELOCATABLE
-	ld	r4, HSTATE_SCRATCH1(r13)
-#else
 	mfctr	r4
-#endif
 	mfxer	r5
 	lbz	r6, PACAIRQSOFTMASK(r13)
 	std	r3, _LINK(r1)
diff --git a/arch/powerpc/kvm/book3s_segment.S b/arch/powerpc/kvm/book3s_segment.S
index 0169bab544dd..1f492aa4c8d6 100644
--- a/arch/powerpc/kvm/book3s_segment.S
+++ b/arch/powerpc/kvm/book3s_segment.S
@@ -167,16 +167,9 @@  kvmppc_interrupt_pr:
 	 * R12             = (guest CR << 32) | exit handler id
 	 * R13             = PACA
 	 * HSTATE.SCRATCH0 = guest R12
-	 * HSTATE.SCRATCH1 = guest CTR if RELOCATABLE
 	 */
 #ifdef CONFIG_PPC64
 	/* Match 32-bit entry */
-#ifdef CONFIG_RELOCATABLE
-	std	r9, HSTATE_SCRATCH2(r13)
-	ld	r9, HSTATE_SCRATCH1(r13)
-	mtctr	r9
-	ld	r9, HSTATE_SCRATCH2(r13)
-#endif
 	rotldi	r12, r12, 32		  /* Flip R12 halves for stw */
 	stw	r12, HSTATE_SCRATCH1(r13) /* CR is now in the low half */
 	srdi	r12, r12, 32		  /* shift trap into low half */